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    <meta charset="utf-8">
    <title>css测试</title>
    <style type="text/css">
        span{color: red;font-size: large;text-decoration: underline;}
        h1{color: aliceblue;width: 700px;height: 200px;margin: 0 auto;background-color:green;font-size: 100px;}
        div{text-indent: 2em;background-color: burlywood;width: 800px;height: 100px;}
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<body>
    <center>
        <h1>神奇动物</h1>
    <div>这里有好多美丽的<span>动物</span>，我很喜欢他们。这些<span>动物</span>很可爱，你知道吗？你不知道，只有我知道这些<span>动物</span>很可爱。</div>
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